Thread-cutting temple spring



Dec. 16, 1952 w. .1. LANDERS 2,

THREAD-CUTTING TEMPLE spam;

Filed July 18. 1950 2 SHEETS-SHEET 1 INVENTOR. WiLLIAM J LANDBRS Dec.16, 1952 w. J. LANDERS 2,621,917

THREAD-CUTTING TEMPLE SPRING Filed July 18, 1950 2 SHEETS-SHEET 2INVENTOR. WILLIAM J. LANDERS ATTolzN EY5 Patented Dec. 16, 1952 UNITEDSTATES PATENT OFFICE THREAD-CUTTING TEMPLE SPRING William J. Landers,Griifin, Ga. Application July 18, 1950, Serial No. 174,478

2 Claims.

This invention relates to thread-cutting temples for looms, and moreparticularly to a spring therefor.

An object of the present invention is to provide a spring having longerlife and more emcient action than present springs, and which reduces theamount of wear on the cutter and the stop of the temple body.

Another object of the present invention is to provide a spring which maybe easily and quickly adjusted by hand to adapt the spring to templeshaving difierent arrangements of the parts, and to vary the tension andoperative efiect of the spring on the cutter element.

The invention, together with its objects and advantages, will be bestunderstood from a study of the following description taken inconjunction with the accompanying drawings, wherein:

Figure 1 is a longitudinal elevation view of the head portion of athread-cutting temple with the spring of the present invention appliedthereto;

Figure 2 is a top plan view of the temple and spring shown in Figure 1;

Figure 3 is a longitudinal elevational view of the spring of the presentinvention in relaxed condition, viewed from the inner face thereof;

Figure 4 is an end elevational view of the spring of Figure 3, viewedfrom the right of the latter figure;

Figure 5 is a fragmentary elevational view looking from left to right inFigure 1, showing the lower coil of the spring applied to the lug on theheel of the cutter element;

Figure 6 is a perspective view of the spring of the present invention.

Referring to the drawings, the numeral 5 designates the head of aconventional thread-cutting temple with the spring 6 of the presentinvention applied thereto.

The spring 6 is formed from a single length of spring Wire which,adjacent one end thereof, is wound or convoluted into a shock absorbinganchor or first helical coil 1, the coil I comprising a plurality ofconvolutions, the convolutions at the inner end of the coil beingextended tangentially to provide a finge 8.

The convolution at the outer end of the coil 1 is likewise extendedtangentially to provide a straight lever arm II which terminates andmerges with the inner convolution of an intermediate or hinge coil I3,the coil I3 having a lesser number of convolutions than, and an internaldiameter larger than the anchor coil 1. The coil 1 has a sufiicientnumber of convolutions to space the lever arm II and the hinge coil I3out of contact with the side of the temple 5. The outer convolution ofthe hinge coil I3 terminates in a tangential substantially straightextending lever arm I2 which is substantially longer than the lever armI I, as shown in Figure 1. The lever arm I2 is disposed at substantiallya right angle to the lever arm I I. The other end of the arm I2 mergestangentially into the outer convolution of a second helical or anchorcoil I 0 which is wound in a direction opposite that of the hinge coilI3 and the anchor coil 1, the coil I0 terminating in the other end ofthe single length of wire. The coil I0 has an internal diametersubstantially the same as that of coil I.

In operation, the anchor coil I is circumposed on a lug or stud I4 whichprojects from the side of the temple 5 to the rear of a shoulder I5formed on said temple, and against which the finger 8 bears, as shown inFigure 1. With this disposition of the spring 6, the spring isoperatively applied by flexing the same downwardly and laterally untilthe coil I ll can be circumposed on the lug I6 carried by the heel I Iof the cutter element. In this arrangement, the lever arm II is in asubstantially horizontal position, and the cutter element is yieldablyheld in its raised rearward inoperative position of rest to which thespring returns the cutter element after every cutting stroke thereofproduced by the striking of the heel I! in a left-hand direction inFigure 1, with the lay of the loom.

What is claimed is:

1. A loom temple spring consisting of a single length of spring wireformed to provide a helical anchor coil including a plurality ofconvolutions, a finger projecting tangentially from said coil andconnected to the final convolution at one end of said coil, a firstsubstantially straight lever arm projecting tangentially from said coiland having one end connected to the final convolution at the other endof said coil, a hinge helical coil on the side of said lever armopposite to said anchor coil and including a plurality of convolutionsof an internal diameter larger than the convolutions of said anchor coiland having the final convolution at one end thereof connected to theother end of said lever arm, a second substantially straight lever armprojecting tangentially from the final convolution at the other end ofsaid hinge coil and having one end secured to the latter convolution,said second lever arm being disposed at substantially a right angle tosaid lever arm and in a plane substantially parallel to that in whichsaid first lever arm lies, and a second anchor helical coil on the sameside of said second lever as said hinge coil and having the finalconvolution at and connected to the other end of said second lever arm.

2. A loom temple spring consisting of a single length of spring wireformed to provide a helical anchor coil including a plurality ofconvolutions, a finger projecting tangentially from said coil andconnected to the final convolution at one end of said coil, a firstsubstantially straight lever arm projecting tangentially from said coiland having one end connected to the final convolution at the other endof said coil, a hinge helical coil on the side of said lever armopposite to said anchor coil and including a plurality of convolutionsof an internal diameter larger than the convolutions of said anchor coiland having the final convolution at one end thereof connected to theother end of said lever arm, a second substantially straight lever armprojecting tangentially from the final convolution at the other end ofsaid hinge coil and having one end secured to the latter convolution,said second lever arm being disposed at substantially a'right angle tosaid lever arm and in a plane substantially parallel to that in whichsaid first lever arm lies, and a second anchor helical coil on the sameside of said second lever arm as said hinge coil and having the finalconvolution at and connected to the other end of said second lever arm,said second anchor coil being of the same diameter as that of said firstanchor coil and being convoluted in a direction opposite to theconvolutions of said first anchor coil.

WILLIAM J. LANDERS.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 876,096 Ryan Jan. 7, 19081,003,596 Glaser Sept. 19, 1911 1,627,220 Withrow May 3, 1927 2,353,977Repass July 4, 1944 FOREIGN PATENTS Number Country Date 52,057 FranceApr. 5, 1943 570,116 Germany Feb. 11, 1933

